【Spread Sheet 应用（一）】去掉原有功能键及添加功能键

        Dim im As FarPoint.Win.Spread.InputMap
        im = vaBody.GetInputMap(FarPoint.Win.Spread.InputMapMode.WhenAncestorOfFocused)
        im.Put(New FarPoint.Win.Spread.Keystroke(Keys.F3, Keys.None), FarPoint.Win.Spread.SpreadActions.None)
        im.Put(New FarPoint.Win.Spread.Keystroke(Keys.F4, Keys.None), FarPoint.Win.Spread.SpreadActions.None)

        im = vaBody.GetInputMap(FarPoint.Win.Spread.InputMapMode.WhenFocused)
        im.Put(New FarPoint.Win.Spread.Keystroke(Keys.F4, Keys.None), FarPoint.Win.Spread.SpreadActions.None)